WO2022200013A1

WO2022200013A1 - Drink bladder with magnetic closure device

Info

Publication number: WO2022200013A1
Application number: PCT/EP2022/055414
Authority: WO
Inventors: Philip Naftali; Izik Moalem; Breido Botkus; Joachim Fiedler; Holger Knorr; Timo Severain; Joschan Aderhold; Friedemann Richter
Original assignee: Fidlock Gmbh
Priority date: 2021-03-23
Filing date: 2022-03-03
Publication date: 2022-09-29
Also published as: TW202239677A; CN116437835A; KR20230066462A; US20230389680A1; EP4188157B1; CN219330934U; JP2024508103A; DE102021202822A1; TWI821930B; EP4188157A1

Abstract

The invention relates to a drink bladder (1), comprising a hollow body (10) for receiving a liquid, said drink bladder comprising a closure device (2) with a closure composite (2V). The closure composite can be adjusted from a release position, in which first and second closing sections (104, 105) can be separated from one another in an intended manner against a magnetic force applied by the first and second closure parts (21, 20) in order to release an opening on the hollow body, into a closed position by folding or rolling the first and second closing sections at least once. The closure device (2) comprises a securing mechanism (S), via which the closure composite (2V), in the closed position, is secured.

Description

Hydration bladder with magnetic closure device

description

The proposed solution relates to a hydration bladder with a closure device for closing an opening formed between a first closure section and a second closure section on the hydration bladder.

A cavity in a hollow body of the drinking bladder is closed via the opening closed with the aid of the closing device. Different solutions are known from practice, for example with a screw cap, via which a drinking bladder is effectively secured against unintentional opening by the user. Closure devices on drinking bladders that have been customary up to now, however, are regularly not perceived as particularly innovative or valuable and are also not always comfortable for the user to handle. There is therefore a need for further improvement in drinking bladders in this respect. In this context, it must be taken into account in particular that, for example due to increased internal pressure in a cavity of the hydration bladder closed by the closure device, not inconsiderable (increased) forces can occur on closure parts of a closure device. In this respect, a hydration bladder according to claim 1 represents an improvement over the solutions known from the prior art.

A proposed drinking bladder comprises a hollow body for receiving a liquid and a closure device. The hollow body has at least one flexible wall and at least one connection for connection to a drinking tube. Liquid can be filled into the hollow body via an opening which is formed between a first closing section and a second closing section and can be closed by the closing device. The closure device has a first closure part on the first closure section and a second closure part on the second closure section, wherein

- the first closure part has a first strip body extending longitudinally in a transverse direction,

- the second closure part has a second strip body extending longitudinally in the transverse direction,

- the first closure part and the second closure part interact magnetically in such a way that in a closed position of the closure device the first closure section and the second closure section abut one another and form a closure assembly (2 V) with the first and second closure parts, and

- the closure assembly can be moved from a release position, in which the first and second closure sections are intended to be separated from one another against a magnetic force applied by the first and second closure parts to release the opening, by folding or rolling the first and second closure sections at least once into a closed position.

The closure device also includes a securing mechanism, via which the closure assembly present in its closed position is secured.

In one embodiment variant, the closure device can additionally comprise a third closure part on a first closure section, with which the closure assembly interacts in a magnetically attractive manner in its closed position. The closure layer can then be additionally secured mechanically via the additional security mechanism, so that the security mechanism prevents the closure assembly from being unintentionally removed from the third closure part. In principle, however, the proposed solution is also advantageous without such a third closure part interacting magnetically with the closure assembly. One embodiment variant of a proposed drinking bladder includes a closure device in which the closure sections can be adjusted by folding or rolling them at least once into the closed position and the safety mechanism protects the closure assembly against (unintentional) removal from its closed position assumed in this way due to an increased internal pressure in the through the closure device the opening closed hollow body secures. A proposed closure device (particularly independently of a third closure part that interacts magnetically with the closure assembly) has proven to be advantageous in order to secure a closure position assumed by folding or rolling it over at least once against undesired opening if, as a result of increased internal pressure on a through the closure device closed hollow body of a hydration bladder shear and / or lifting forces act on the first and second closure parts. Here, an additional safety mechanism can be used to effectively counteract, in particular, shear forces that act in a central section of the strip bodies of the first and second closure parts in a direction perpendicular to a longitudinal direction of the strip bodies, and/or lifting forces that act on the closure assembly at the longitudinal ends and under the effect of which the closure parts strive are to move away from each other, to be counteracted.

In principle, the safety mechanism can therefore be set up in the locked position

- to counteract a lifting force acting on the longitudinal ends of the first and second strip bodies and resulting from the increased internal pressure, under the effect of which mutually opposite longitudinal ends of the first and second strip bodies strive to move away from one another, and/or

- to counteract a shearing force resulting from the increased internal pressure, which acts in a central region of the first and second strip bodies on the closure device in a plane extending parallel to the first and second closure sections.

The securing mechanism can therefore be set up in particular to counteract a shearing force which acts between the first and second closure parts, between the closure assembly and a third closure part or between the closure assembly and a wall which the closure assembly faces in the closed position. The proposed solution is based on the basic idea of additionally securing the closure assembly mechanically in its closed position with the closure sections that abut one another in the closed position against displacement into the release position, at least as long as no release force applied by the user acts on the closure assembly along a specific, predetermined direction of action . In this way, in particular, an unintentional opening of the closure assembly can be prevented. The additional securing mechanism can thus be actuated manually and thus released in order to be able to move the closure assembly back into the release position. However, without the user deliberately releasing the safety mechanism, the locking system remains blocked against being shifted into the release position. The first and second closure parts with their strip bodies thus provide a (possibly already sealing) closure on the closure sections, which is mechanically secured against unintentional opening via the security mechanism. Removal from the locked position, against which a mechanical safeguard is provided via the safety mechanism, is not only understood to mean accidental removal by an active attack on the locking device by the user, but in particular (at least partial) removal from the locked position, which occurs on a load not applied by the user and acting on the locking device is reduced.

In the closed position, the first and second closing sections can be folded or rolled up, in particular by the first and second closing sections and thus the walls having closing sections being bent at least once by 180°, viewed along a path of extension in cross section perpendicular to the transverse direction.

The strip bodies are arranged on the closure sections and thus act on the closure sections, whereby the closure parts interact magnetically attractively and the closure sections are thus held magnetically in abutment with one another when the first and second closure parts are in their closed position.

In order to provide a magnetic interaction, the first strip body and/or the second strip body can each be formed from a magnetic material, for example by the strip bodies being formed from a plastic material, in particular a polymer material, or a silicone material to which a magnetic material in the form of magnetic particles is added is added. Alternatively For example, the strip bodies can each accommodate a magnet arrangement made up of discrete magnetic elements, so that the strip bodies interact in a magnetically attractive manner through the interaction of the magnet arrangements. It is conceivable that each closure part has a permanent magnetic effect, for example by the strip bodies being formed with permanent-magnetic particles and thus made of a permanent-magnetic material or by the magnet arrangements of the closure parts each being formed from an arrangement of permanent magnets. Alternatively, however, it is also possible for one closure part to act as a permanent magnet and the other closure part as a ferromagnetic anchor, for example by the ferromagnetic closure part being a strip body made of a ferromagnetic material (e.g. a plastic material to which ferromagnetic particles are added) or having discrete ferromagnetic elements.

If a closure part has a magnet arrangement of discrete magnetic elements, the discrete magnetic elements can be lined up linearly along the transverse direction, for example, with the discrete magnetic elements being spaced regularly from one another along the transverse direction, for example. However, it is also conceivable and possible to arrange the discrete magnetic elements in rows and columns using a two-dimensional matrix.

In principle, a third closure part can also have a third strip body extending along the transverse direction. For example, the third closure part is arranged on an offset section of a first wall that differs from the first closure section. In the closed position, the third closure part can interact with the first closure part in a magnetically attractive manner, for example, in order to hold the closure assembly in the closed position.

The third closure part can be arranged spatially offset from the first closure section perpendicularly to the transverse direction. In such an embodiment variant, the third closure part is thus designed with its third strip body extending parallel to the first strip body of the first closure part, but offset transversely to the first closure part.

In the closed position, the third strip body and the first strip body can be, for example, with surfaces facing one another in a flat opposite relationship to one another. The locking parts interact magnetically, so that the first closure part is held in a defined positional relationship to the third closure part.

In one embodiment variant, the first strip body and/or the second strip body and/or a third strip body of a third closure part are designed to be elastic. A strip body can have increased rigidity compared to the walls of a hollow body on which the closure device is inserted, for example, but is so elastic that it can be bent, in particular about a vertical direction perpendicular to the transverse direction.

An additional connection between the closure assembly and a wall connected to the first closure section and/or between the closure assembly and the third closure part can be provided via the securing mechanism when the closure assembly is in the closed position. A connection between the closure assembly and the third closure part includes, for example, that in the closed position a connection between the first closure part and the third closure part or between the second closure part and the third closure part is provided via the safety mechanism. The additional connection provided via the securing mechanism can be provided in a form-fitting manner and to absorb shearing forces acting on the closure device.

For example, the securing mechanism has at least one securing part, which secures the closure assembly against removal from the third closure part via a positive fit. In principle, the positive connection can already exist in the closed position of the closure assembly. However, an embodiment variant is also included in which a form fit for securing the closure assembly against removal from the third closure part only exists when a specific load acts on the closure device.

In a further development, the securing mechanism has at least two securing parts which interact with one another in a form-fitting manner when the closure collar is in the closed position in order to secure the closure combination against removal from the third closure part. These at least two securing parts can here also come into positive engagement with one another as soon as the closed position is reached by the closure composite or, alternatively, at least be brought into a relative position with respect to one another in which, when a load occurs on the Closure device of the form-fitting engagement of the two securing parts is automatically realized in each other.

In a further development based on this, a first security part and a second security part are provided, the first security part being set up to engage behind the second security part in order to secure the closure assembly against removal from the third closure part. On the one hand, effective form-fitting securing of the two securing parts to one another can be ensured by means of a corresponding gripping from behind and thus an undercut formed on the securing mechanism. On the other hand, it is also comparatively easy to achieve that the securing parts can only be disengaged again by a targeted release movement. Accidental separation of the safety parts, in particular when the locking device is under load, is thus ruled out.

In principle, a securing part of the securing mechanism can also be formed on one of the closure parts. Alternatively or additionally, a securing part can be formed by a component of the locking device that is separate from a locking part.

In one embodiment variant, the closure device comprises at least one magnetic element, under the effect of which at least one securing part of the securing mechanism is positioned in a securing position in which the at least one securing part can block the closure assembly against removal from the third closure part via a form fit. A corresponding magnetic element can also be formed here by magnetic material in the form of magnetic particles. Alternatively, a magnetic element can comprise a permanent magnet, which is arranged at a corresponding point on the closure device.

In a securing position in which a securing part of the securing mechanism is positioned under the action of at least one magnetic element, the securing part can already be in positive engagement in order to secure the closure assembly against displacement into the release position. However, it can also be provided that the securing part is still in an intermediate position in its securing position, from which the securing part is only shifted into an engagement position under the effect of additional loading on the closure device, in which the blocking form-fitting engagement then exists. An embodiment variant also provides that the at least one securing part is already adjusted into the securing position under the action of the at least one magnetic element when the closure assembly is transferred into its closed position. The at least one magnetic element thus ensures that the at least one security part is in its security position when the closure assembly reaches the closure position.

In an alternative embodiment variant, the at least one security part can only be adjusted after the closure assembly has been transferred into its closed position and thus subsequently in the direction of the security position. This subsequent adjustment can then be supported by the at least one magnetic element - at least in a final section of an adjustment path before the securing position is reached - in order to support the taking of a predetermined position by the at least one securing part in the securing position by magnetic attraction.

In principle, an additional positive fit can be provided between the closure assembly and a wall to which the first closure section is connected, in order to secure an adopted engagement position. For example, an embodiment variant provides at least one form-fitting element on the closure assembly side, e.g. in the form of a latching lug or a latching web, which engages in a latching opening on the wall side when the securing part is in the engaged position.

In one embodiment variant, an additional security element is provided on the closure assembly, on which at least one security part of the security mechanism is fixed at a distance from the first and second closure parts. The securing element has, for example, a flexible or rigid carrier body on which the at least one securing part is fixed. For example, the securing part is offset in a spatial direction, which runs transversely to the extension direction of the strip bodies of the first and second closure parts, in relation to the first and second closure parts. A mechanical locking of the closure assembly in the closed position can thus be provided via the security part provided on the additional security element at a distance from the first and second closure parts and optionally also at a distance from the third closure part. This includes, for example, with reference to a variant already mentioned above, that the security part provided on the additional security element is a first Forms securing part, which is positively connected in the closed position of the closure assembly with a second securing part, which is provided on a wall connected to the first closing section and in particular fixed thereto. The first and second security part can in particular be part of a magnetic closure, via which the closure assembly is additionally secured in its closed position against displacement into the release position.

In one embodiment variant, the securing mechanism has at least one securing part which, after the closure assembly has been transferred into its closure position, can be adjusted by pivoting about at least one joint axis into a securing position that secures the closure assembly. In the security position, the at least one security part consequently secures the closure assembly present in its closure position against removal from the third closure part. In this case, the securing part can be pivoted about its hinge axis into its securing position after the locking assembly has been moved into the locking position. In this embodiment variant, the at least one security part is then, for example, subsequently pivoted into its security position in a targeted manner by the user in order to additionally secure the locking assembly.

The hinge axis can be defined, for example, by a hinge via which the at least one securing part is articulated to the closure assembly, to a third closure part of the closure device or to a wall connected to the first or second closure section. In the latter case, the securing part can be articulated on a front, first or rear, second wall along a viewing direction (perpendicular to the longitudinal extension of the first and second strip bodies) onto the closure assembly present in its closed position.

For example, the joint axis is defined by a film hinge or a foil. A pivotable securing part can be provided on the closure device comparatively inexpensively via a film hinge or a film. For example, the film defining the hinge axis can be a section of a wall of the hydration bladder to which one of the closing sections is connected,

In order to keep the closure device as compact as possible, an embodiment variant provides that the at least one Securing part is connected to the third closure part. The at least one securing part is then linked to the third closure part via the film hinge and consequently does not have to be provided on any separate component.

In one embodiment variant, the at least one securing part in its securing position provides a form-fitting connection, which in particular absorbs shear forces and/or lifting forces, between the closure assembly present in the closed position and the third closure part. For example, the securing part can also be pivoted into its securing position relative to a third strip body of the third closure part via the film hinge and then positively connected to the closure assembly after the closure assembly has assumed the closure position. The securing part can be provided at a longitudinal end of the third strip body via the film hinge. For example, the securing part is in the form of a strap, in particular in the form of a strip.

For a form-fitting connection via the securing part in the securing position pivoted about the joint axis, at least one receptacle can be provided on the at least one securing part, into which another securing part of the securing mechanism engages in a form-fitting manner in the securing position. For example, an opening is provided on the securing part for this purpose, into which a protruding pin or web of the further securing part engages in the securing position. Alternatively or additionally, at least one form-fitting element can be provided for the at least one securing part, which engages in a form-fitting manner in a receptacle of a further securing part of the securing mechanism in the securing position. A corresponding positive-locking element can then also be formed here by a pin or web, which is inserted into a corresponding receptacle of a further securing part. A further security part mentioned above can be formed in particular on a closure part of the closure assembly, ie for example on the first closure part.

Alternatively or additionally, the securing mechanism can have at least one securing part for the targeted mechanical securing of longitudinal ends of the closure assembly (relative to a longitudinal extension direction of the strip bodies and thus to the transverse direction) on a wall or on a third closure part. Such a longitudinal-end-side securing acts primarily against vertical lifting, optionally also against shearing opposite. A safety part that can be used for this purpose includes, for example, in particular an articulated safety part that has already been mentioned above. However, this is also understood to mean an alternative embodiment variant in which, for example, a securing part is formed with a Velcro strip, an O-ring or a sleeve slipped over a longitudinal end.

As already mentioned above, the closure assembly with the first and second closure parts in the closed position can be transferred from the release position into the closed position by pivoting the closure assembly about a pivot axis parallel to a first spatial direction (e.g. in relation to a Cartesian coordinate system of the x-direction). . The closure assembly is consequently folded here about the pivot axis parallel to the first spatial direction, for example by approximately 180°. A (resulting) magnetic force for holding the closure assembly in its closed position with respect to the third closure part then acts along a spatial axis which is parallel to a second spatial direction (y) perpendicular to the first spatial direction. In such a variant, the locking assembly is secured via the locking mechanism against removal from the third locking part due to shearing forces, i.e. against removal due to a shearing force that points in a third spatial direction (-z) that is both perpendicular to the first spatial direction (x) and perpendicular to the second spatial direction (y). Consequently, if a shearing force acts on the closure assembly, which points in the third spatial direction, the closure assembly is secured via the securing mechanism against displacement in this spatial direction and thus against displacement into the release position.

For example, the closure assembly can be folded over from the release position into the closure position, in which the closure assembly is then secured via the securing mechanism against displacement relative to the third closure part beyond a permitted extent along the third spatial direction and thus also against folding back. This third spatial direction is in the opposite direction to a directional component along which the closure assembly is folded over into the closed position. In this way, the securing mechanism can also prevent the closure assembly from lifting or shearing off the third closure part as a result of a load being applied to the closure device, for example a load that is due to increased internal pressure in a cavity closed by the closure device. One variant provides that a securing part, which blocks the locking assembly against displacement along the third spatial direction, is initially in an intermediate position when the locking assembly reaches the locking position and can only then be shifted into an engagement position. Provision can be made here for the securing part of the securing mechanism to be positioned (only) in the intermediate position by magnetic attraction when the closure assembly is transferred into its closed position.

In one variant, alternatively or additionally, the shift into the engagement position, in which, for example, one securing part engages behind another securing part of the securing mechanism, can be supported by at least one (additional) magnetic element. Thus, at least one magnetic element can be provided, under whose effect the at least one securing part from the

Intermediate position is adjusted to the engaged position. When the closure group has taken its closed position and thus the security part in the

If there is an intermediate position, the adjustment of the securing part is further supported into the engaged position under the action of a magnetic force.

The magnetically supported adjustment from the intermediate position to the engaged position can also include that via a magnet arrangement of the

Safety mechanism is a bistable state for the position of the fuse part specified when the closure assembly is in its closed position. About this, the fuse part on the magnet assembly is then first in the

maintained intermediate position. However, if a load then acts on the locking device, causing the locking assembly to be displaced in the direction of the release position, a slight displacement movement of the security part associated with this leads to a change in magnetic elements that attract one another and, associated with this, a magnetically supported displacement of the security part into the engaged position. This includes in particular that the securing mechanism is set up to allow a slight shifting movement of the securing part in the direction of action of the shearing force under the effect of a shearing force acting on the closure assembly, which then leads to the magnetically assisted shifting of the securing part into the engaged position.

Irrespective of whether the securing part is shifted from the intermediate position into the engaged position with magnetic support, an embodiment variant can provide that the at least one securing part is increased under the effect of a Internal pressure in a cavity accessible via the opening from the

Intermediate position can be displaced into the engaged position. The securing mechanism is consequently designed here in such a way that the securing part automatically shifts into the engaged position when an increased internal pressure, i.e. one that exceeds a threshold value, acts in the cavity. After filling the cavity of the hydration bladder with liquid, especially during transport or loading, the internal pressure can increase to such an extent that the securing part on the securing mechanism of the closure device is automatically shifted from the intermediate position to the engaged position. In such an embodiment variant of the proposed closure device, a closed position of the

Closure system automatically, i.e., without user attack on the safety mechanism, additionally mechanically against an adjustment in the

Release position secured. After the load on the hydration bladder has been removed, the securing part can then also be automatically returned to the intermediate position, which in turn facilitates the release of the securing mechanism and thus the opening of the closure device. For a user is thus through the

Safety mechanism additionally provided mechanical safety of the locked position without disturbing influence on the opening of the locking device.

In one embodiment variant, the first strip body of the first closure part is enclosed, for example, between an inner layer and an outer layer of a first wall, which borders a cavity of the hollow body to be closed by the closure device. Additionally or alternatively, the second strip body of the second closure part can be enclosed between an inner layer and an outer layer of a second wall of the hollow body. The respective strip body, which can be designed as a solid strip-shaped band, is thus located in an intermediate layer between the inner layer and the outer layer and is thus enclosed between the layers and thus covered on the inside by the inner layer and on the outside by the outer layer .

In one embodiment variant, the first closing section is formed by the inner layer of the first wall and the second closing section is formed by the inner layer of the second wall. The closure portion of each wall is thus integrally formed on the inner layer of each wall. In the closed position, the closing sections lie flat against each other and create a tight seal, so that the float body is sealed to the outside, in particular so fluid-tight that no moisture can get into the interior of the float body.

In one embodiment variant, the first wall and/or the second wall are flexible. In particular, both the first wall and the second wall can be flexible and limp, so that the float body can be deformed in a flexible, easily deformable manner and can thus adapt its shape to absorb a liquid. The flea body is thus designed in the manner of a bag due to the walls.

In principle, first and second walls, to which the first and second closure sections of a proposed closure device are connected, can be part of a continuous wall element. The first and second walls can thus in particular be designed in one piece. For example, first and second walls that are opposite one another in a cross-sectional view can be formed by a single, one-piece wall element in the form of a blow-molded part.

The attached figures illustrate exemplary possible embodiment variants of the proposed solution.

Here show:

Fig. 1 is a view of a hydration bladder with a flea body and a

Closure device according to an embodiment;

FIG. 2 shows an exploded view of the arrangement according to FIG. 1 ;

3A is a front view of the hydration bladder;

Fig. 3B is a sectional view taken along line A-A of Fig. 3A;

FIG. 3C shows an enlarged view of section B according to FIG. 3B; FIG.

4 shows a view of a drinking bladder with a float body and a closure device according to a further embodiment;

FIG. 5 shows an exploded view of the arrangement according to FIG. 4; 6A is a front view of the hydration bladder;

Fig. 6B is a sectional view taken along line C-C of Fig. 6A; FIG. 6C is an enlarged view of portion C of FIG. 6B; 7 shows a view of a drinking bladder with a hollow body and a closure device according to yet another embodiment;

FIG. 8 shows an exploded view of the arrangement according to FIG. 7; 9A is a front view of the hydration bladder; Fig. 9B is a sectional view taken along line A-A of Fig. 9A; FIG. 9C shows an enlarged view of section B according to FIG. 9B; 10A-10B show a further development of the hydration bladder shown in FIGS. 1 to 9C, on which a proposed safety mechanism is additionally provided, which is shown in two different positions;

11A-11B show a further variant embodiment with an additional securing mechanism, which here has two strip-shaped securing tabs which are folded down in FIG. 11A and pivoted into a securing position in FIG. 11B;

FIG. 12 shows a further embodiment variant in a sectional view corresponding to FIG. 3C, in which a safety mechanism is provided with two safety parts which engage behind one another in the event of a load;

FIG. 13, in a view corresponding to FIG. 12, a further development in which reaching a desired position of a securing part of the securing mechanism is supported magnetically; FIG. 14 shows a further development in a view corresponding to FIG. 12, in which an additional mechanical safety device is provided via a projecting safety bar; FIG.

15 shows a front view of a further variant embodiment of a proposed drinking bladder with a further variant embodiment of a proposed closure device;

Fig. 15A is a sectional view taken along line A-A of Fig. 15;

16A-16C, each in an enlarged view of section C according to FIG. 15A, a further development of the closure device in different phases when closing and opening, in which a securing part of the closure assembly is moved under magnetic force control into an engagement position when the closure assembly assumes a closure position, and the engagement position is defined by an additional form-fitting element on the closure assembly side;

17A-17B, in views corresponding to FIGS. 16A to 16C, a further embodiment variant in different phases when closing the closure device;

18A-18B, in views corresponding to FIGS. 17A and 17B, a further embodiment variant in which a locking part on the locking assembly side is provided on the first locking part.

1 to 3A-3C show views of a first exemplary embodiment of a drinking bladder 1 which has a hollow body 10 which is bordered by walls 100, 101 and is designed to hold a liquid which can flow off via an outlet 10A provided on the hollow body 10 , e.g. in a drinking tube connected to it.

The walls 100, 101 are connected to one another, for example by welding, at parallel side edges that are spaced apart from one another along a transverse direction x and at a lower edge along a vertical direction z, and are to be closed in the area of an upper end by a closure device 2 in such a way that an inner volume of the Hollow body 10 or a cavity defined herewith in one Closing position of the hydration bladder 1 is sealed. As can be seen from the sectional view according to FIG. 3C, each wall 100, 101 is formed by two layers 106, 107, of which an inner layer 106 points towards the inner volume of the hollow body 10 and an outer layer 107 points outwards.

The walls 100, 101 are designed to be flexible, so that the hollow body 10 can be flexibly deformed in order to be able to expand when a liquid is taken up in the hollow body 10.

The closure device 2 has three closure parts 20 , 21 , 22 . Of these closure parts 20, 21, 22, a first closure part 21 is arranged on a closing portion 104 of the first wall 100, while a second closure part 20 is arranged on a closure portion 105 of the second wall 101 such that the closure parts 20, 21 are along the vertical direction z extend at the same height on the respective associated wall 100, 101. The closure parts 20, 21 work together in a magnetically attractive manner, so that in the closed position of the closure device 2 the closure sections 104, 105, which are each formed by the inner layer 106 of the associated wall 100, 101, lie flat against one another and thus form a seal and form a closure assembly 2V .

A third closure part 22 is arranged on a section 102 of the first wall 100 that is offset from the closure section 104 of the first wall 100 and, viewed along a path of extension starting from the closure section 104 in the cross section according to FIG. 3C, is arranged transversely offset to the first closure part 21.

The closure parts 20, 21, 22 each have a strip body 202, 212, 222, which is longitudinally extended along the transverse direction x and thus extends transversely to the vertical direction z.

The closure parts 20, 21, 22 are designed to work together in a magnetically attractive manner. In the illustrated embodiment, the strip bodies 202, 212, 222 are each made of a magnetically active material, for example by the strip bodies 202, 212, 222 being made of a plastic material or a silicone material in which magnetically active particles are embedded.

The strip bodies 202, 212, 222 can in this case each have a permanent magnetic effect and then point to each other in pairs with opposite poles in such a way that magnetically attract strip bodies 202, 212, 222 to one another in the sequence illustrated in Figure 3C. Alternatively, for example, only the strip body 212 of the first closure part 21 can have a permanent magnetic effect, while the other strip bodies 202, 222 are ferromagnetic, so that the associated closure parts 20, 22 act as magnetic anchors. It is also conceivable, for example, for the closure parts 20, 21 to be designed to be permanently magnetic on their strip bodies 202, 212, while the strip body 222 of the third closure part 22 has a ferromagnetic effect.

As can be seen, for example, from FIG. 3C, the strip bodies 202, 212, 222 are enclosed between the inner layer 106 and the outer layer 107 of the respectively associated wall 100, 101. Thus, the strip bodies 212, 222 of the closure parts 21, 22 are enclosed between the inner layer 106 and the outer layer 107 of the first wall 100, while the strip body 202 of the closure part 20 is enclosed between the inner layer 106 and the outer layer 107 of the second wall 101 is.

The first closure part 21 and the second closure part 20 press the closure sections 104, 105 flat against one another in such a way that the closure sections 104, 105 formed by the inner layers 106 of the walls 100, 101 bear against one another in the manner of membranes and the float body 10 thus sealingly closed. The third closure part 22 holds the closure assembly 2V formed by the closure parts 20, 21 in a defined closed position, with the walls 100, 101 being folded by 180° in an area between the closure sections 104, 105 and transversely to the closure sections 104, 105 offset sections 102, 103, as can be seen from Fig. 3C. This further improves the tightness of the closure device 2 in the closed position.

The first closure part 21 and the second closure part 20 each have a grip element 200, 210 on which a user can grip. By acting on the closure parts 20, 21, the closure parts 20, 21 can in particular be detached from the further, third closure part 22 and moved into a release position. In this release position, the closure parts 20, 21 can be removed from one another along an opening direction y, which is perpendicular to the transverse direction x and the vertical direction z, and the closure sections 104, 105 can thus be separated from one another, so that the interior of the float body 10 can be accessed through the opening thus released is accessible. In an embodiment shown in Fig. 4 to 6A-6C, the strip bodies 202, 212, 222 are not made entirely of a magnetic material, but each have an array of receiving openings 201, 211, 221, in which discrete magnetic elements each have a Magnet arrangement 23, 24, 25 are added. The discrete magnetic elements are lined up along the transverse direction X and thus form a linear array of magnetic elements, with the magnet arrangements 23, 24, 25 of the different closure parts 20, 21, 22 interacting in a magnetically attractive manner in the closed position and thus the hollow body 10 via the Closing sections 104, 105 sealingly close.

The discrete magnetic elements of the magnet arrangements 23, 24, 25 can each be formed by discrete permanent magnets, for example made of a neodymium material. However, it is also conceivable that only one magnet arrangement 23, 24, 25 or two of the magnet arrangements 23, 24, 25 have discrete permanent magnets, while the other magnet arrangements 23, 24, 25 are formed from discrete ferromagnetically active elements.

Otherwise, the exemplary embodiment according to FIGS. 4 to 6A-6C is functionally identical to the exemplary embodiment according to FIGS should be referred to the previous explanations.

The embodiment according to FIGS. 7 to 9A-9C corresponds to the embodiment according to FIGS. 4 to 6A-6C, in which case there is no third closure part 22, as in the embodiment according to FIGS. 4 to 6A-6C, and the closure device 2 is thus formed by only two closure parts 20, 21. Otherwise, the hydration bladder 1 has the same function as the hydration bladder 1 according to FIGS. 4 to 6A-6C.

10A to 18B show variants of the proposed solution, in which the locking device 2 is further developed with a safety mechanism S. The locking position of the locking assembly 2V is additionally secured mechanically via this locking mechanism S. In this case, the securing mechanism S is designed in particular to absorb shear forces (in the xz plane or in the vertical direction z, -z) and/or lifting forces (in the spatial direction y) that arise as a result of increased internal pressure in the hollow body 10, for example due to a liquid absorbed therein. Under the Otherwise, due to the effect of these shearing forces, there is an increased risk that the closure assembly 2V will be removed from the third closure part 22 and folded around the spatial axis parallel to the x-direction (upwards) into the release position, and the two closure parts 20 and 21 will also be removed from one another.

In the embodiment variant of FIGS. 10A and 10B, an additional security element in the form of a security tab 3 is arranged on the closure assembly 2V. This securing tab 3 is fixed to the second closure part 20 and forms a carrier body for a pair of first securing parts 3.1, 3.2. The first securing parts 3.1 and 3.2 protrude with a securing pin on an inner side 31 of the securing tab 3 and are completely covered by an outer side 30 of the securing tab 3 in the closed position of the locking assembly 2V.

If the closure assembly 2V is folded into its closed position according to FIG. On the second securing parts 4.1 and 4.2, which are arranged at a distance from the third closure part 22 in the z direction, engagement openings 41 and 42 are formed, into which the securing pins of the first securing parts 3.1 and 3.2 engage. In the present case, a magnet arrangement is provided in a pair of first and second securing parts 3.1/4.1, 3.2/4.2 in such a way that the first securing parts 3.1 or 3.2 are each adjusted with magnetic support into a positive locking position on the respective second securing part 4.1 or 4.2 when the first Securing part 3.1, 3.2 has sufficiently approached the associated second securing channel 4.1, 4.2 when folding over the closure assembly 2V and thus the securing tab 3. The respective first securing part 3.1, 3.2 is thereby inserted under the action of the respective magnet arrangement along an insertion gap 410 or 420, which is provided on the engagement opening 41, 42 of its associated second securing part 4.1 or 4.2 and runs radially with respect to the engagement opening 41 or 42, into the intended Lock position shifted. A pair of securing parts 3.1/4.1, 3.2/4.2 thus each form a magnetically supported closure.

If the closure assembly 2V is in the correct closure position with respect to the third closure part 22, the closure assembly 2 is additionally mechanically secured against folding back into the release position via the securing mechanism S and the interlocking securing parts 3.1/4.1, 3.2/4.2. To the To release the safety mechanism S, the safety tab 3 must be subjected to a targeted release force F _L by a user in order to disengage the first and second safety parts 3.1/4.1, 3.2/4.2. Here, the release force F _L must be applied in order to move the first securing parts 3.1, 3.2, which are fixed to the securing tab 3, along the respective insertion gap 410 or 420 out of an engagement opening 41 and 42 of the associated wall-side second securing part 4.1 and 4.2. In the exemplary embodiment shown, the insertion gaps 410 and 420 extend parallel to one another in the z-direction, so that the release force F _L must be applied to the securing tab 3 along the z-direction.

Alternatively, of course, a different orientation of the insertion gaps 410, 420 is also possible. In particular, it is conceivable that the insertion gaps 410, 420 are each open in the transverse direction x and thus the securing tab 3 must first be displaced transversely before the closure assembly 2V can be folded back and thus removed from the third closure part 22.

In the embodiment variant of FIGS. 11A and 11B, the securing mechanism S has two securing parts in the form of narrow, strip-shaped securing tabs 223A, 22B, which are each provided via a film hinge 222A or 222B at a longitudinal end of the third strip body 222 of the third closure part 22 are. The securing tabs 223A and 223B are thus each attached to the strip body 222 of the third closure part 22 via a film hinge 222A or 222B.

In addition, additional securing parts of the securing mechanism S are formed on the second strip body 202 of the second closure part 20 in the form of securing pins 204A and 204B. The securing pins 204A and 204B protrude in the y-direction on the strip body 202 when the closure assembly 2V is in its closed position with respect to the third closure part 22 . On the securing tabs 223A and 223B there are (shear force) receptacles 224A and 224B in the form of through-openings, which can be formed by folding the securing tabs 223A and 223B around a joint axis defined by the respective film hinge 222A and 222B and running parallel to the z-direction with a associated securing pin 204A or 204B can be positively engaged. The securing pins 204A and 204B are each provided at a distance from a longitudinal end of the strip body 202, so that a securing tab 223A or 223B always encompasses at least one end of the strip body 202 when its receptacle 224A or 224B is brought into engagement with the associated securing pin 204A or 204B . A flat section of the respective securing tab 223A or 223B is thus directly opposite a section of the strip body 202 .

In order to support the form-fitting connections between the securing tabs 223A, 223B of the third closure part 22 and the second closure part 20 of the closure assembly 2V in the securing position of the securing tabs 223A, 223B that is thus defined and can be seen in Fig. 11 B, a magnet arrangement with magnetic elements 205A , 205B on the closure assembly 2V and magnetic elements 225A, 225B on the securing tabs 223A, 223B. The magnetic elements 205A, 205B of the closure assembly 2V, which are arranged as an example on the second strip body 202 of the second closure part 20 in FIG. In this way, the system of the folded-over securing tabs 223A, 223B on the strip body 202 and the engagement of a respective securing pin 204A, 204B on the strip body side in a tab-side receptacle 224A or 224B are supported.

In the variant of FIGS. 21, 22 from each other (in the spatial direction y) under the effect of an increased internal pressure in the flea body 10 and thus an undesired opening of the closure device 2 when the flea space 10 is filled with liquid is counteracted.

In the embodiment variants of FIGS. 12, 13 and 14, the closure device 2 is shown in a sectional view corresponding to FIG. 3C. In each of the variants illustrated with Figures 12, 13 and 14 is the

Closure device 2 again formed with an additional safety mechanism S. This securing mechanism S again has the effect of removing the closure assembly 2V present in the closed position from the third closure part 22 and thus in particular shearing off the third closure part 22 and if necessary, a separation of the two closing layers 104 and 105 from one another by a defined form fit—here between the closure assembly 2V and the third closure part 22—against. However, the safety mechanism S is designed in such a way that a user can easily remove the closure assembly 2V from the third closure part 22 and can be folded back (upward) into the release position if, for example, liquid is to be refilled into the float body 10 via the opening between the closing sections 104 and 105 .

In the embodiment variant in FIG. 12, the securing mechanism S has a first securing part in the form of a securing hook 216 on the first closure part 21 . The safety hook 216 protrudes in the closed position of the closure assembly 2V in the -y direction on the first closure part 21 in the direction of the (first) wall 100 . For example, the safety hook 216 is formed on the handle element 210 for this purpose.

In the locked position of the locking assembly 2V, the locking hook 216 is opposite a locking cutout 226 of a second locking part of the locking mechanism S, which is formed by the third locking part 22 . Securing recess 226 is open in the z-direction, so that the -y-direction securing hooks 216 protruding on the first closure part 21 can positively engage in the securing recess 226 with a flake end protruding in the -z-direction and thus locally engage behind the third closure part 22.

In the closed position of the closure assembly 2V, the safety hook 216 is initially in an intermediate position in which the safety hook 216 does not (yet) engage in the safety cutout 226 with its flank end. However, the securing hook 216 is opposite the securing recess 226 in the intermediate position in such a way that when there is a load on the closure device 2 due to an increased internal pressure in the float body 10 and a resulting pressure or shearing force component FD on the closure assembly 2V, which acts in the -z direction , the securing hook 216 is brought into positive engagement with the securing recess 226 . Under the effect of the increased internal pressure, the securing hook 216 is thus displaced into an engaged position in which the securing hook 216 has a section one through the third Closure part 22 engages behind the second securing part formed and in this way blocks the closure assembly 2V from being removed from the third closure part 22 . The closure assembly 2V is thus also locked against being folded over (in the clockwise direction in FIG. 12) about the spatial axis parallel to the spatial direction −x into the release position.

In the further development of FIG. 13, a positioning section 227 projecting in the y-direction is provided on the wall 100 opposite the safety cutout 226 . This wall-side positioning section 227 carries a magnet element 227M, which interacts magnetically with a magnet element 210M of the first closure part 21 in a magnetically attractive manner. The magnet element 21 OM on the closure part side is integrated in the grip element 210 in the present example. The magnetic force of attraction between the magnetic elements 210M and 227M can be used to ensure that the locking hook 216 is correctly positioned with respect to the locking recess 226 when the locking assembly 2V is folded over into its locking position. In this way, it can be ensured in particular that the safety hook 216 engages as desired in an engagement opening 2260 formed between the safety cutout 226 and the positioning pin 227 when the locking assembly 2V is folded over into its closed position and is opposite the safety cutout 226 as intended in such a way that a form-fitting, blocking engagement of the safety hook 216 into the safety recess 226 is possible.

The magnetic elements 227M and 210M can also support the securing hook 216 in taking up the engagement position. The magnetic elements 227M and 210M can interact in such a way that the safety hook 216 is automatically shifted from the intermediate position shown in FIG. 13 into the engaged position or at least a corresponding adjustment into the engaged position is supported. If the safety hook 216 thus engages in the engagement opening 2260 as intended when the closure assembly 2V is folded over into the closed position, the safety hook 216 is driven further into the engagement position under the action of the magnetic elements 227M and 210M. In the engaged position, the safety hook 216 then engages behind the third closure part 22. In the safety position thus defined, there is already a positive locking engagement between the closure assembly and the third closure part 22, which in the safety position of the embodiment variant in Figures 12 is only produced by loading the closure device 2 . In the embodiment variant of Figure 14, a security part in the form of a security bar 207 is attached to the closure assembly 2V as part of the

Safety mechanism S provided. This securing web 207 is formed on the second closure part 20 and, in the closed position of the closure assembly 2V, protrudes from the second closure part 20 in the direction of the first wall 100 and thus in the -y direction. The securing web 207 protrudes so far that one end of the securing web 207 engages under or behind the third closure part 22—viewed in the z-direction. The securing web 207 and thus the closure assembly 2V present in its closed position cannot be displaced past the third closure part 22 in the −z direction. An adjustment of the closure assembly 2V in the −z direction is thus mechanically blocked by the interaction of the securing web 207 with the third closure part 22 . This also prevents the closure assembly 2V from being removed from the third closure part 22 due to shearing forces, for example due to an increased internal pressure in the flea chamber 10 . The securing bar 207 must first be adjusted by a targeted displacement of the closure assembly 2V in the y-direction away from the wall 10 and thus also away from the third closure part 22, so that the securing bridge 207 no longer blocks the closure assembly 2V from being folded over.

FIG. 15 shows a front view of a further embodiment variant of a proposed drinking bladder 1 with an outlet 10A for connecting a drinking tube to the flea body 10. FIG. 15A shows the drinking bladder 1 of FIG. 15 in a sectional view. 16A-16C, 17A-17B and 18A-18B show further variants of the closure device 2 in an enlarged view corresponding to section C of FIG. 15A.

In the variant in Figures 16A-16C, in analogy to the exemplary embodiment in Figure 13, the closure assembly 2V is designed with an additional securing component in the form of a security hook 206, which in the closed position of the closure assembly 2V can positively engage in a securing recess 226 on the third closure part 22 , to additionally mechanically secure the locking position of the locking system 2V. In contrast to the exemplary embodiment in FIG. 13, the safety hook 206 is not formed on the first closure part 21 but on the second closure part 20, here by way of example on a handle body 2000 of the handle element 200. Thus, the safety hook 206 in the embodiment variant of FIGS. 16A to 16C is on that second closure part projecting in the direction of the wall 100, which in the closed position of the closure assembly 2V is located in front of the first and third closure parts 21, 22 viewed along the -y direction (opposite to the opening direction y).

On the wall 100, between the strip body 222 of the third closure part 22 and a positioning section 227 spaced apart therefrom in the vertical direction z, there is again an engagement opening 2260 for the securing hook 206 on the closure assembly side. In order to make it easier to insert the safety hook 206 into the engagement opening 2260 , the handle body 2000 is articulated on the strip body 202 of the second closure part 20 . For this purpose, a wall thickness in a transition section A between the strip body 202 and the grip body 200 adjoining it in the vertical direction z is reduced in a targeted manner and can be seen as an indentation in the cross section of FIGS. 16A to 16C. In this way, targeted elasticity is introduced between the strip body 202 and the grip body 2000 at the transition section A in order to be able to displace the grip body 2000 relative to the strip body 202 about a joint axis running parallel to the transverse direction x on the user side. The handle body 200 can thus be connected to the strip body 202 in particular via a film hinge defined by the transition section A.

With the transfer of the closure assembly 2V into its closed position according to FIG. 16A, the safety hook 206 is inserted into the engagement opening 2260 and is initially in an intermediate position according to FIG. 16A. The locking assembly 2V with the safety hook 206 is then displaced along the vertical direction -z (upward in FIGS. 16A to 16C) via magnetic elements 227M and 200M of the positioning section 227M and the handle body 2000 that act in an attracting manner. As a result, the securing hook 206 is shifted from the intermediate position into an engagement position in which the securing hook 206 positively engages in the securing recess 226 on the third closure part 22 .

In order to specify the engagement position between the locking hook 206 on the locking assembly side and the third locking part 22 and, if necessary, to additionally secure it, a form-fitting connection is provided between the handle body 2000 and the positioning section 27 . A form-fitting element in the form of a locking lug 200R is thus formed on the handle body 2000 at a distance from the safety hook 206 . This locking lug 200R snaps positively into a locking opening 227R on the positioning section 227 when the closure assembly 2V with the Securing hook 206 is displaced from the intermediate position to the engaged position (see FIG. 16B).

In order to release the securing mechanism S and thus disengage the securing hook 206 from the third closure part 22 again, it is sufficient for a user to grip the handle element 200 and move the handle body 2000 outwards about the joint axis defined by the transition section A, i . H. of the wall 100 pivots away. The position of the joint axis defined by the transition section A and the securing recess 226 and the securing hook 206 are matched to one another in such a way that the securing hook 206 is displaced from the securing recess 226 and the engagement opening 2260 by the corresponding pivoting movement. This makes it easy for a user to open the closure device 2, although the closure assembly 2V in the closed position is secured against unintentional opening in several respects and, in particular, counteracts shear forces acting in the xz plane and in the vertical direction -z, which result from an increased internal pressure in the hollow body 10 result.

The embodiment of Figs. 17A and 17B is basically with the

Embodiment variant of FIGS. 16A to 16C comparable. In contrast to the embodiment of FIGS. 16A to 16C, in the embodiment of FIGS. 17A and 17B only the form fit in the engagement position between the handle body 2000 and the positioning section 227 is designed differently. Instead of a detent, a detent bar 200R projecting in cross-section in the form of a pin is provided on the grip body 2000, which can engage in a corresponding detent opening 227R, e.g. slot-like, on the positioning section 227R.

In the embodiment of FIGS. 18A and 18B is analogous to that

16A-16C and 17A-17B, a safety mechanism S is provided, in which the locking assembly 2V with a safety part in the form of a safety hook 216 is shifted, controlled by magnetic force, from an initially assumed intermediate position into an engaged position, in which the safety hook 216 moves into a safety recess 226 engages in a form-fitting manner on the third closure part 22 . The securing hook 216 is formed on the first strip body 212 of the first closure part 21 in the embodiment variant of FIGS. 18A-18B. The strip body 212 then also interacts magnetically with the positioning section 227 in order to control the automatic displacement of the closure assembly 2V into the engaged position. An example of this is the embodiment variant in Fig. 18A-18B at least one additional magnetic element 212M is provided in the strip body 212 spaced apart from the magnet arrangement 24 in the vertical direction -z. This at least one additional magnetic element 212M of the first closure part 21 interacts with at least one magnetic element 227M of the positioning section 27, for example, in order to move the closure assembly 2V, which is folded over in the direction of the wall 100, from the initially assumed intermediate position in the vertical direction -z (upward) into the engagement position to relocate.

In an alternative embodiment, it is of course also possible for the closure assembly 2V to be folded over or rolled up several times about an axis parallel to the transverse direction x in order to assume the closure position on the wall 100 . Furthermore, in order to secure the closed position with the aid of the securing mechanism S, it is also not mandatory for a third closure part 22 to interact with the closure assembly 2V in a magnetically attractive manner. In particular, a magnet arrangement 25 in the strip body 222 of the third closure part 22 can consequently be omitted in the embodiment variants of FIGS. 10A to 18B without this impairing the functions of the securing mechanism S.

The idea on which the proposed solution is based is not limited to the exemplary embodiments described above, but can also be implemented in a completely different manner.

Reference List

1 hydration bladder (liquid container)

10 hollow bodies

10A outlet

100, 101 wall

102, 103 section

104, 105 closing section

106 Inner layer

107 Outer location

2 locking device

2 V locking compound

20, 21, 22 closure part

200, 210 handle element

200M magnetic element

200R locking lug / locking bar (positive locking element)

2000 handle body

201, 211, 221 receiving openings

202, 212, 222 strip bodies

204A, 204B safety pin (safety part)

205A, 205B magnetic element

206 safety hook (safety part)

207 safety bar (safety part)

21 OM magnetic element

212M magnetic element

216 safety hook (safety part)

222A, 222B living hinge

223A, 223B Fuse Tab (Fuse Part)

224A, 224B receptacle 225A, 225B magnetic element

226 Fuse Cutout

2260 engagement opening

227 positioning section

227M magnetic element

227R detent opening

23, 24, 25 magnet assembly

3 securing tab (securing element) 3.1, 3.2 first securing part

30 outside

31 inside

4.1, 4.2 Second securing part 41, 42 engagement opening

410, 420 insertion gap A transition section FD compression/shear force component FL release force S securing mechanism x, y, z direction

Claims

Expectations

1 . Hydration bladder, with a hollow body (10) for receiving a liquid, wherein

- the hollow body (10) has at least one flexible wall (100, 101) and at least one connection (10A) for connection to a drinking tube,

- the liquid can be filled into the hollow body (10) via an opening which is formed between a first closing section (104) and a second closing section (105) and can be closed by a closing device (2) of the drinking bladder (1), and

- The closure device (2) has a first closure part (21) on the first closure section (104) and a second closure part (20) on the second closure section (105), wherein

- the first closure part (21) has a first strip body (212) extending longitudinally along a transverse direction (x),

- the second closure part (20) has a second strip body (202) extending longitudinally along the transverse direction (x),

- the first closure part (21) and the second closure part (20) interact magnetically in such a way that in a closed position of the closure device (2) the first closure section (104) and the second closure section (105) rest against one another and with the first and second closure parts (21, 20) form a closure assembly (2 V),

- the closure assembly (2V) from a release position in which the first and second closure sections (104, 105) are intended to be separated from one another against a magnetic force applied by the first and second closure parts (21, 20) to release the opening, at least once Folding over or rolling up the first and second closing sections (104, 105) into a closed position can be adjusted, and

- The closure device (2) comprises a safety mechanism (S) via which the closure assembly (2 V) present in its closed position is secured.

2. Hydration bladder according to claim 1, characterized in that the locking assembly (2 V) present in its locking position is secured via the securing mechanism (S) against removal of the locking assembly (2 V) from the locking position due to an increased internal pressure in the hollow body (10). is.

3. Hydration bladder according to claim 2, characterized in that the first and second

Strip body (212, 202) have two longitudinal ends and the

Safety mechanism (S) is set up in the closed position

- to counteract a lifting force that acts on the longitudinal end side of the first and second strip bodies (212, 202) and results from the increased internal pressure, via the effect of which mutually opposite longitudinal ends of the first and second strip bodies (212, 202) strive to move away from one another, and/ or

- to counteract a shearing force resulting from the increased internal pressure, which occurs in a central region of the first and second strip bodies (212, 202) on the closure device (2) in a plane (xz- level) works.

4. Hydration bladder according to one of claims 1 to 3, characterized in that via the securing mechanism (S) a connection between the

Closure compound (2 V) and the wall (100, 101) connected to the first or second closing section (104, 105) is provided if the

Closure system (2 V) is in the closed position.

5. Hydration bladder according to one of the preceding claims, characterized in that the closure device (2) on the wall (100) comprises a third closure part (22) and in the closed position the closure assembly (2V) and the third closure part (22) are magnetically attractive Cooperate to hold the closure assembly (2V) in the closure position.

6. Hydration bladder according to claim 5, characterized in that via the securing mechanism (S) an additional connection between the closure assembly (2V), in particular the first or second closure part (21, 20), and the third closure part (22) is provided if the locking assembly (2 V) is in the locked position.

7. Hydration bladder according to one of the preceding claims, characterized in that the securing mechanism (S) has at least one securing part (3.1, 4.1; 3.2, 4.2; 223A, 204A; 223B, 204B; 216, 226; 207) which has a form fit secures the locking assembly (2 V) in the locked position.

8. Hydration bladder according to claim 7, characterized in that the securing mechanism (S) has at least two securing parts (3.1, 4.1; 3.2, 4.2; 223A, 204A; 223B, 204B; 216, 226) which, in the closed position of the closure assembly (2nd V) interacting positively with one another in order to secure the closure assembly (2 V) in the closed position.

9. Hydration bladder according to Claim 8, characterized in that a first securing part (216) and a second securing part (226) are provided and the first securing part (216) is set up to engage behind the second securing part (226) in order to secure the closure assembly (2nd V) to be secured against removal from the third closure part (22).

10. Hydration bladder according to one of the preceding claims, characterized in that the closure device (2) comprises at least one magnetic element (205A, 225A; 205B, 225B; 21 OM, 227M; 200M, 227M; 212M, 227M), under the action of which at least one Securing part (3.1, 3.2; 223A, 223B; 216; 207) of the securing mechanism (S) is positioned in a securing position in which the at least one securing part (3.1, 3.2; 223A, 223B; 216; 207) secures the closure assembly ( 2 V) can lock against moving into the release position.

11. Hydration bladder according to claim 10, characterized in that the at least one securing part (3.1, 4.1; 3.2, 4.2; 216, 226; 207) under the action of the at least one magnetic element when the closure assembly (2 V) is transferred into its closed position with in the security position is adjusted.

12. Hydration bladder according to claim 10, characterized in that the at least one securing part (223A, 223B) can only be adjusted into the securing position after the closure assembly (2V) has been transferred into its closed position.

13. Hydration bladder according to one of the preceding claims, characterized in that an additional securing element (3) is provided on the closure assembly (2V), on which at least one securing part (3.1, 3.2) of the

Securing mechanism (S) to the first and second closure parts (21, 20) is fixed at a distance.

14. Hydration bladder according to claims 4 and 13, characterized in that on the securing element (3) provided securing part (3.1, 3.2) forms a first securing part which in the closed position of the closure assembly (2 V) with a second securing part (4.1, 4.2) is positively connected, which is provided on the wall (100).

15. Hydration bladder according to one of the preceding claims, characterized in that at least one securing part (223A, 223B) of the securing mechanism (S) can be adjusted into a securing position after the closure assembly (2V) has been transferred into its closed position by pivoting about at least one joint axis, in which the at least one security part (223A, 223B) secures the closure assembly (2 V) in its closed position.

16. Hydration bladder according to claim 15, characterized in that the hinge axis runs transversely to a direction of longitudinal extension of the first and/or second strip body (212, 202).

17. Closure device according to claim 15 or 16, characterized in that the hinge axis is defined by a hinge via which the at least one securing part (22A, 223B) on the closure assembly (2V), on a third closure part (22) of the closure device (2nd ) or is articulated to the wall (100, 101) connected to the first or second closing section (104, 105).

18. Hydration bladder according to one of claims 15 to 17, characterized in that the axis of articulation is defined by a film hinge (222A, 222B) or a foil.

19. Hydration bladder according to claim 6 and according to claim 17 or 18, characterized in that via the at least one securing part (223A, 223B) present in its securing position, a form-fitting connection between the closure assembly (2V) present in the closed position and the third closure part ( 22) is provided.

20. Hydration bladder according to Claims 18 and 19, characterized in that the third closure part (22) has a third strip body (222) extending longitudinally in the transverse direction (x) and the at least one securing part (223A, 223B) via the film hinge (222A , 222B) is connected to a longitudinal end of the third strip body (222) in the transverse direction (x).

21. Hydration bladder according to one of Claims 15 to 20, characterized in that at least one receptacle (224A, 224B) is provided on the at least one securing part (223A, 223B), into which a further securing part (204A, 204B) of the Safety mechanism (S) form-fitting engages, and/or at least one positive-locking element is provided on the at least one securing part (223A, 223B), which positively engages in the securing position in a receptacle of a further securing part of the securing mechanism (S).

22. Hydration bladder according to one of the preceding claims, characterized in that

- the closure assembly (2V) can be transferred from the released position into the closed position by folding it at least once or by rolling the closure assembly (2V) around a pivot axis parallel to a first spatial direction (x),

- a magnetic force for folding the closure assembly (2 V) in its closed position with respect to the third closure part (22) acts along a spatial axis which is parallel to a second spatial direction (y) running perpendicular to the first spatial direction (x), and

- the locking assembly (2V) is secured via the locking mechanism (S) against removal from the third locking part (22) under the effect of a shearing force which points in a third spatial direction (-z) which is both perpendicular to the first spatial direction (x ) and perpendicular to the second spatial direction (y).

23. Hydration bladder according to one of claims 15 to 21 and according to claim 22, characterized in that the axis of articulation runs parallel to the third spatial direction (-z).

24. Hydration bladder according to claim 23, characterized in that the securing mechanism (S) has at least one securing part (216), which is in an intermediate position when the closure assembly (2V) reaches the closed position, and the securing part (216) from the intermediate position can be displaced into an engagement position in which the securing part (216) blocks the closure assembly (2V) against displacement along the third spatial direction (-z).

25. Hydration bladder according to claim 24, characterized in that the at least one securing part (216) in the engaged position blocks the closure assembly (2V) against adjustment along the third spatial direction (-z) and against adjustment along the second spatial direction (y) blocks.

26. Hydration bladder according to claim 25, characterized in that the closure device (2) comprises at least one magnetic element (21OM, 227M), under the action of which the at least one securing part (216) of the securing mechanism (S) is automatically positioned in the intermediate position when the locking assembly (2 V) is transferred to its locking position.

27. Hydration bladder according to one of claims 24 to 26, characterized in that the closure device (2) comprises at least one magnetic element, with the cooperation of which the at least one securing part (216) is adjusted from the intermediate position into the engaged position.